For A20 PTO ratio codes 07–15. Ratio codes 05 and 06 require A20-RBK-05A.
Muncie A20-RBK-07A brings together clutch, bearing, adjustment and sealing components for rebuilding compatible A20 Series power take-offs. It includes seven friction discs, eight spacer discs, replacement bearings, washers, snap rings, a spring and a shim kit. Use the complete PTO model and ratio code to select the correct rebuild kit before disassembly.
The A20-GSK gasket and seal kit is already included. You do not need to order another A20-GSK for the same rebuild unless additional sealing parts are required. This rebuild kit supplies the listed service components; inspect the gears, shafts and other retained parts to determine whether the repair needs additional replacements.
Service the clutch, bearings and seals together
| Included component group |
Practical benefit |
| Clutch friction and spacer discs |
Provides the replacement disc components used during clutch-pack service. |
| Needle, tapered, input and output bearings |
Groups the specified bearing replacements in one kit. |
| Shims and retention hardware |
Supplies adjustment and retention components for rebuilding to the service procedure. |
| A20-GSK gasket and seal kit |
Includes the sealing kit with the internal service parts. |
Specifications and kit selection
| Specification or selection |
Detail |
| Manufacturer part number |
A20-RBK-07A |
| PTO series |
Muncie A20 |
| Applicable ratio codes |
07–15 |
| Ratio codes 05 and 06 |
Select A20-RBK-05A instead. |
| Included sealing kit |
A20-GSK |
| Input bearings in this kit |
Two 10T43096 bearings |
Kit contents
Quantities below are included in one A20-RBK-07A kit.
| Component and quantity |
Part number |
| Snap ring — 1 |
12T43296 |
| Spring — 1 |
27T36112 |
| Spacer discs — 8 |
49T33564 |
| Friction discs — 7 |
49T40641 |
| Stepped thrust washer — 1 |
21T43294 |
| Thrust washer — 1 |
21T63014 |
| Needle bearing — 1 |
10T43603 |
| Snap ring — 1 |
12T43295 |
| Tapered bearing — 1 |
10T43098 |
| Shim kit — 1 |
18TK6341 |
| Square washers — 2 |
18T42642 |
| Input bearings — 2 |
10T43096 |
| Belleville washers — 2 |
27T43291 |
| Output bearing — 1 |
10T43097 |
| Gasket and seal kit — 1 |
A20-GSK |
Before ordering
Clean the PTO and inspect its gears for excessive wear or damage before beginning the rebuild. Follow Muncie's A20 rebuild instructions for component placement, bearing adjustment and tightening requirements. The procedure calls for appropriate service tools, including a dial indicator, bearing puller, bearing press and torque wrench.
| Check |
Why it matters |
| Complete PTO model and ratio code |
Confirm A20 Series and a ratio code covered by A20-RBK-07A. |
| Repair scope |
Inspect retained components; the kit does not replace every part of the PTO. |
| Sealing parts |
A20-GSK is included; avoid ordering a duplicate kit unintentionally. |
| Tools and service procedure |
Confirm the equipment and instructions needed for disassembly, pressing and adjustment are available. |
Installation and service documents
Review the Muncie A20 PTO Rebuild Instructions (PDF — IN21-06) for disassembly, inspection and reassembly procedures.
Need help selecting the correct PTO rebuild kit? Contact UnitedBuilt through online chat, email parts@unitedbuilt.com, or call 602-253-7750 with your complete PTO model, ratio code and a photo of the identification tag.
